[aruanan]

Vocal pitch and speed: It has previously been established that some big markets do real-time time compression on Rush's show in order to have a greater amount of time each hour to sell for local ads. Sometimes this results in audible artifacts. It can sound like a slight garble. If someone doing it doesn't watch which knobs he's tweaking, it can result in a higher pitch, though both pitch and duration can be adjusted separately. Today both the speed and the pitch seem to be bumped up.

In looking through reviews on vocal pathologies, I have not yet located one that describes a shift to a higher pitch.